/* vKanban landing — brutalist */
*, *::before, *::after { box-sizing: border-box; }

:root {
  --bg: #F2F2F2;
  --surface: #FFFFFF;
  --ink: #0A0A0A;
  --muted: #6B6B6B;
  --line: #0A0A0A;
  --accent: #0A0A0A;
  --accent-ink: #FFFFFF;
  --yellow: #F5D547;
  --red: #EF4444;
}

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.45;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

.topbar {
  border-bottom: 3px solid var(--line);
  padding: 14px 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--surface);
  position: sticky;
  top: 0;
  z-index: 10;
}

.brand {
  font-weight: 700;
  font-size: 20px;
  letter-spacing: -1px;
}

.topbar-meta {
  font-family: 'SF Mono', Monaco, Consolas, monospace;
  font-size: 11px;
  letter-spacing: 1.5px;
  color: var(--muted);
}

main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 56px 28px 40px;
}

.eyebrow, .cell-label {
  font-size: 10px;
  letter-spacing: 2px;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--ink);
  border-bottom: 2px solid var(--line);
  display: inline-block;
  padding-bottom: 4px;
  margin-bottom: 18px;
}

.hero h1 {
  font-size: clamp(42px, 7vw, 84px);
  line-height: 0.95;
  letter-spacing: -3px;
  font-weight: 700;
  margin: 0 0 24px;
}

.hero .pitch {
  font-size: 18px;
  max-width: 560px;
  margin: 0 0 32px;
  color: var(--ink);
}

.cta-row {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.btn {
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 16px 28px;
  border: 3px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  transition: transform 80ms ease, background 80ms ease, color 80ms ease;
}
.btn:hover { transform: translate(-2px, -2px); box-shadow: 6px 6px 0 var(--line); }
.btn:active { transform: translate(0, 0); box-shadow: 0 0 0 var(--line); }
.btn[aria-disabled="true"] {
  opacity: 0.55;
  cursor: not-allowed;
  pointer-events: none;
}

.btn.primary {
  background: var(--accent);
  color: var(--accent-ink);
}
.btn.primary:hover { box-shadow: 6px 6px 0 var(--yellow); }

.btn-label {
  font-size: 14px;
  letter-spacing: 2px;
}
.btn-sub {
  font-family: 'SF Mono', Monaco, Consolas, monospace;
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 1px;
  opacity: 0.8;
  margin-top: 4px;
}

.channel-tabs {
  display: flex;
  gap: 0;
  margin-top: 8px;
}
.channel {
  border: 2px solid var(--line);
  background: var(--surface);
  padding: 6px 14px;
  font-family: inherit;
  font-size: 11px;
  letter-spacing: 2px;
  font-weight: 700;
  cursor: pointer;
}
.channel + .channel { border-left: 0; }
.channel.active {
  background: var(--ink);
  color: var(--accent-ink);
}
.channel[disabled] {
  opacity: 0.4;
  cursor: not-allowed;
}

.grid {
  margin-top: 96px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border: 3px solid var(--line);
  background: var(--line);
  gap: 3px;
}
.cell {
  background: var(--surface);
  padding: 28px;
  min-height: 200px;
}
.cell h2 {
  font-size: 22px;
  letter-spacing: -0.5px;
  margin: 0 0 10px;
  font-weight: 700;
}
.cell p {
  margin: 0;
  color: var(--muted);
}

.release {
  margin-top: 96px;
  border: 3px solid var(--line);
  background: var(--surface);
}
.release-head {
  padding: 20px 24px;
  border-bottom: 2px solid var(--line);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 20px;
  flex-wrap: wrap;
}
.release-head .cell-label {
  margin: 0;
  border: 0;
  padding: 0;
}
.release-version {
  font-family: 'SF Mono', Monaco, Consolas, monospace;
  font-size: 20px;
  font-weight: 700;
}
.release-notes {
  margin: 0;
  padding: 20px 24px;
  font-family: 'SF Mono', Monaco, Consolas, monospace;
  font-size: 13px;
  white-space: pre-wrap;
  background: var(--surface);
  color: var(--ink);
  max-height: 360px;
  overflow: auto;
}
.release-foot {
  padding: 14px 24px;
  border-top: 2px solid var(--line);
  font-family: 'SF Mono', Monaco, Consolas, monospace;
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 1px;
}

footer {
  border-top: 3px solid var(--line);
  padding: 18px 28px;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  font-family: 'SF Mono', Monaco, Consolas, monospace;
  font-size: 11px;
  letter-spacing: 1px;
  color: var(--muted);
  background: var(--surface);
  margin-top: 80px;
}
.foot-links { display: flex; gap: 18px; }
.foot-links a { text-decoration: none; border-bottom: 1px solid var(--muted); }
.foot-links a:hover { color: var(--ink); border-color: var(--ink); }

@media (max-width: 760px) {
  main { padding: 32px 20px; }
  .grid { grid-template-columns: 1fr; margin-top: 56px; }
  .release { margin-top: 56px; }
  .topbar { padding: 12px 20px; }
}